DAT 420

The DAT 420 detector was designer to continuously measure the presence of various toxic gases in the air such as carbon monoxide and ammonia but also oxygen.
Its electrochemical measurement principle gives it its major assets:

  • measurement stability,
  • selectivity of the gas to be detected and high accuracy.

By connecting it to a Dalemans unit or to any other instrument that can receive a 4.20 mA signal, you will benefit from a highly flexible installation.
ATEX certified, this detector will be particularly suitable for industrial applications located in
an explosive environment.

 

MODEL DAT 420
SENSING HEAD Stainless steel 1.4404 (AISI316L)
SINTERED METAL FILTER
JUNCTION BOX Aluminium
DIMENSIONS / WEIGHT 193 x 145 x 90 mm / 1.500 g
SENSOR TYPE / SIGNAL Electrochemical sensor / 2-wire 4..20 mA
current loop
ADJUSTMENTS Zero and calibration by internal potentiometers
MEASURING RANGE
(non-exhaustive list)*		 CO 300, 500, 1.000 ppm
NO2 20, 50 ppm
Cl2 10, 50 ppm
H2S 50 ppm
O2 25 %
NH3 100, 1.000, 5.000 ppm
SO2 20 ppm
RESOLUTION ±1.5 % escala total
RESPONSE TIME (T90) < 45 sec.
EXPECTED OPERATING LIFE SPAN > 2 years
ELECTRICAL CHARACTERISTICS 15 - 30 Vdc / Max. 30 mA
TEMPERATURE Storage: -40ºC a 80ºC / Use: -10ºC a + 40ºC
AMBIENT HUMIDITY 20 - 90 % HR
INTERMITTENT HUMIDITY 10 - 99 % HR
PRESSURE 90 - 110 kPa
CABLE 2 x 0.5 mm2 twisted and shielded pair (max. 1.000 m)
LOOP RESISTANCE 50 - 750 ohms
INGRESS PROTECTION

IP 6X (dust tight)
CABLE ENTRY

1 x M20 / 6.1 - 11.7 mm (other size upon request)
HAZARDOUS AREAS

Zone 1 or 2 (gas)
NH Zone 21 or 22 (dust)
GAS GROUPING IIC (methane, propane, ethylene, hydrogen, acetylene)
CERTIFICATE FTZU 09 ATEX 0074

Files

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